Tim Pickens heads the Rocket City Space Pioneers, who are participating in the Google Lunar X Prize race - a competition with a $20 million prize for the first team to land a rover on the moon and send back data to Earth. (The Huntsville Times/Eric Schultz)

HUNTSVILLE, Alabama -- Commercial space adviser Tim Pickens is one of the guest speakers at the third annual TEDxHuntsville this weekend.

The theme is "explore" and will feature topics from behavioral economics to social gaming, as well as acrobatics and experiencing future technology.

The event, which combines technology, entertainment and design, is Sunday from 1-5 p.m. at Randolph School. Tickets are $40 and can be purchased at www.tedxhuntsville.com/tickets

Pickens, the chief propulsion engineer at Huntsville-based Dynetics, is the leader of the Rocket City Space Pioneers which is participating in the Google Lunar X Prize race - a competition with a $20 million prize for the first team to land a rover on the moon and send back data to Earth.